Advance in Photon Counting Detectors Using Perovskites

Detection of ionization photons are increasingly important to construct better medical and other types of imaging devices. Perovskites are known for their strong stopping power to ionization radiation, tolerance (self-healing) to defects, and large mobility-lifetime products. However detection of single photon X-ray using perovskite materials is still challenging due to multiple factors. In this talk, I will present our progress in solving multiple issues in materials, devices, and data collection using perovskite single crystals or polycrystalline films. High energy resolution detectors (<1% for Cs137 source) will be reported.